Secondary Suite

Learn about secondary suites in Canadian housing — what they are, their benefits, and the legal requirements for adding one.

Secondary Suite

June 27, 2025


What is a Secondary Suite?

A secondary suite is a self-contained residential unit within a single-family home, often in a basement or accessory building, designed for rental or extended family use.

Why Secondary Suites Matter in Real Estate

In Canadian housing, secondary suites help increase housing supply, provide rental income, and support multigenerational living.



Key features:
  • Private entrance and living space
  • Full kitchen and bathroom facilities
  • Separate heating and ventilation systems (often required)



Secondary suites must comply with zoning, building, and fire safety codes to be legal. They may also impact mortgage qualification and insurance.



Understanding secondary suites helps buyers, owners, and investors assess income potential and regulatory compliance.

Example of a Secondary Suite in Action

The homeowner added a legal secondary suite in the basement to generate rental income and help qualify for a larger mortgage.

Key Takeaways

  • A self-contained unit within a home
  • Provides rental or extended family housing
  • Must meet legal and safety standards
  • Boosts property value and income potential
  • Affects financing and insurance

Related Terms

Additional Terms

Public Realm Improvements

Public realm improvements are enhancements to public spaces such as sidewalks, parks, plazas, and streetscapes, often funded or contributed by. more

Mortgagee in Possession

A mortgagee in possession is a lender who takes control of a property after borrower default, but before foreclosure or power of sale. The lender. more

Lease Surrender Agreement

A lease surrender agreement is a negotiated contract between a landlord and tenant that ends a lease before its scheduled expiration. Terms may. more

Green Infrastructure

Green infrastructure refers to natural or engineered systems that manage stormwater, reduce heat, and improve sustainability in developments.. more

Escrow Holdback

An escrow holdback is a portion of funds withheld at closing and held in escrow until specific conditions are met, such as completion of repairs,. more

Underused Housing Tax

The Underused Housing Tax (UHT) is a federal annual 1% tax on the value of vacant or underused residential property owned by non-resident,. more

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